Apparatus for receiving low level digital signals transmitted over power lines
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United States of America Patent
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-
Dec 30, 1986
Grant Date -
N/A
app pub date -
Dec 19, 1983
filing date -
Dec 19, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Digital data is transmitted over AC power lines at typically a 300 baud rate and at a frequency of 130 kilohertz representing a binary ONE and 131 kilohertz representing a binary ZERO. Apparatus in the receiver relay including a quadrature detector converts the high frequency signals to digital binary signals which are applied to a microprocessor. The microprocessor generates signals to control relays in accordance with the information received from the AC power lines.
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